Memorable full-color circularly polarized luminescence from chiral co-assembled polymer films enabled by multipath transfer

作     者：Gong Zhang Yinglong Bao Menghan Pan Nianwei Wang Xiaoxiao Cheng Wei Zhang Gong Zhang;Yinglong Bao;Menghan Pan;Nianwei Wang;Xiaoxiao Cheng;Wei Zhang

作者机构：State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsJiangsu Engineering Laboratory of Novel Functional Polymeric MaterialsSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China School of Chemical and Environmental EngineeringAnhui Polytechnic UniversityWuhu 241000China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2023年第66卷第4期

页      面：1169-1178页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(92056111,21971180) the China Postdoctoral Science Foundation(2022M722312) the Key Laboratory of Polymeric Material Design and Synthesis for Biomedical Function the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions Jiangsu Funding Program for Excellent Postdoctoral Talent the Program of Innovative Research Team of Soochow University 

主　　题：chiral co-assembly chirality transfer multipath transfer memorable full-color CPL achiral polymer 

摘      要：The modulation of circularly polarized luminescence(CPL)is of importance for display and asymmetric chemical ***,the underlying mechanism of CPL transfer remains rarely ***,we rationally design a multipath transfer system including multistep chirality transfer(MCT)and sequential fluorescence resonance energy transfer(SFRET),and we are the first to fabricate memorable full-color CPL-active films with a high dissymmetry factor(~10^(-2)).Specifically,(P/M)-helical nanofibers are constructed by co-assembly between an achiral polymer,poly(9,9-di-n-octylfluorene)(PF8),and easy-to-remove R/*** matching achiral emitters are added,the PF8 mediates MCT and simultaneously triggers the SFRET ***,full-color CPL memory is realized after removing the chiral *** simulation and structure analysis indicate that the robust helical superstructure of PF8 provides chiral sites to accommodate emitters,which is essential for CPL transfer and *** work provides a novel strategy for constructing CPL-active materials in an aggregated state and insights into CPL transfer and memory.